Locking mechanism



Marh- 31, 193 1. 'a. s. FLORADAY LOCKING MECHANISM Filed Jan.

INVENTOR 6 3 art? SZZara day ATTORNEYS Patented Mar. 31, 1931 UNITEDSTATES PATENT OFFICE BURTON S. I'LOBADAY, OI TOLEDO, OHIO, ASSIGNOR TOTHE DURA COMPANY, OF

* TOLEDO, OHIO, A CORPORATION OF OHIO nocrcma MECHANISM.

. i Application filed January 14, 1928. Serial No. 332,492.

The invention relates to locking mechanisms and refers more'particularlyto look ing mechanisms for 'motor vehicle doors adapted to be actuatedby either outside or inside handles. One of the objects of the inventionis to provide a locking mechanism with means for detachably securing anoutside handle thereto soarranged that actuation of an inside handledoes not free the outside handle. Anotherobject is to provide securingmeans movable upon retraction of the bolt of the locking mechanism andadapt;

ed to be held in a position freeing the outside handle upon return ofthe bolt to extended -position. With these as well as other objects inview, the invention resides in the novel features of construction andcombinations and arrangements of parts as more fully hereinafter setforth.

In the drawings Figure 1 is a side elevation of a locking mechanismembodying my invention;

Figure 2 is a view similar to Figure 1, showing a portion of the lockingmechanism 15 with the bolt retracted;

Figure 3 is a side elevation opposite to that of Figure 1 with the coverplate broken away;

Figure 4 is a cross section on the line 44 of Figure 1.

As shown in the present instance the lockin mechanism is designed foruse in motor vehicle doors and has the case plate 1, which is suitablysecured to a door and the locking bolt 2, which is reeiprocablelongitudinal- 1y of the case plate and slidably guided by suitabletongues 3 struck out therefrom and the transverse end flange 4 integraltherewith. 5 is the outside handle which has the spindle 6 extendingtransversely through the case plate. This spindle preferably has thepolygonal portion 7 fitting within a corre spondingly shaped opening inthe roll back 8, which is adapted to engage the transverse shoulder 9upon the bolt to move the bolt to retracted position upon rotation ofthe outside handle. 10 is the inside handle the stem 11 of which extendstransversely through the case plate and is preferably formed with thepolygonal portion 11 for fitting in a cone spondingly shaped opening inthe roll back 12, which is adapted to engage the transverse shoulder 13upon the bolt to move the bolt to retracted position. 14 is a spiralspring secured to the case plate and abutting e transverse shoulder 15upon the bolt for yieldably forcing the bolt to its extended oroperative position.

For the purpose of detachably securing the outside handle to the lockingmechanism, I have provided the securing member 16, which is in thenature of a plate and which is longitudinally slidably mounted upon thecase plate. As shown, the case plate has the tongues 17 struck outtherefrom for engaging the outer side of the locking plate and thelongitudinally extending slot 18 for receiving the transverse tongue 19upon an end of the locking plate. The other end of the locking plate isformed with a longitudinally extending slot having the outer portion 20of greater width than the inner portion 21. The-inner portion is of awidth sufficient to receive the reduced portion 22 of the spindle 6 atthe base of the channel 23 in this spindle. 24 is a suitable springsecured to the case plate and abutting the transverse tongue 19 upon thelocking plate for normally holding the locking plate in a positionfor'the reduced inner portion 21 of the slot to receive the reducedportion 22 of the spindle. This locking plate is adapted to be retractedagainst the effort exerted by the spring 24 by means of the locking bolt2, this locking bolt having I the transverse shoulder 25 for engagingthe transverse tongue 19. It will thus be seen that both the outside andinside handles are adapted to retract the bolt and at the same time toretract the locking plate. However, the movement of the inside handle islimited by means of a suitable tongue 26 struck out from the case plateand adapted to be engagedby the roll back 12 so that the inside handledoes not retract the locking plate as far as the outside handle.

As shown in Figure 2, the outside handle has been rotated to retract thebolt and consequently retract the locking plate, at which time .thespindle is located within the enlarged portion 20 of the slot in thelocking plate, but the spindle is rotated so that the corners of itspolygonal portion overlie the locking plate and the outside handlecannot be removed. However, by holding the locking plate in thisposition and returning the outside handle to its normal position, atlllt'll time the polygonal portion of the spindle will oeeupy a positionsuch as shown by the dotted lines of Figure 2. the locking plate clearsthe polygonal portion of the spindle so that it may be withdrawn fromthe case-plate.

hat l claim as my invention is: I

1. The combination with locking mechanism having a case plate and 'aloekin gbolt, and a handle for moving said bolt to r etracted position.of lllfltlllSfO! detaehably securing said handle to said ease plate inoperative relation to said bolt, movable relative to said case plateupon movementof said bolt to a position freeing said handle from saidcase plate in a predetermined position of said handle.

2. The combination with locking mechanism' having a case plate and alocking bolt, and a handle for moving said bolt to retracted position.of means for detaehably securing said handle to said case plate inoperative relation to said bolt. carried by and movable relative to saidcase plateupon movement of said bolt to a position freeing said handlefrom said ease plate ina predetermined position of said handle.

3. The combination with locking mechanism having a ease plate and alocking bolt, and a handle for moving said bolt to retracted position.of means for detachably securing said handle to said case plateinoperative relation to said bolt, said means including a member carriedby said case plate and adapted to be moved upon retraction of said bolt,said member being adapted to be held stationa 11v relative to said easeplate upon return of said bolt to extended position to free said handlefrom said case plate.

1. The combination with locking mechanism having a case plate and alocking bolt. and a handle for moving said bolt to retracted position,of means for detachably securing said handle to said case plate inoperative relation to said bolt. said means including a member carriedby said ease plate and adapted to be moved by said bolt While beingretracted, said member being adapted to be held stationary relative tosaid case plate upon return of said bolt to extended position to freesaid handle from said case plate.

5. The combination with looking mechanism having a case plate and alocking bolt,

and a handle having a spindle for moving said bolt to retractedposition, of means engage- -able with said spindle for detachablysecuring said handle to said case plate, said means being carried by andbeing movable relative to said case plate upon retraction of said boltto a position clearing said spindle and freeing said handle from saidcase plate in termined position of said handle.

6. The combination with locking mechanism having a case plate and alocking bolt, and outside and inside handles for moving said bolt toretracted position, said outside handle being adapted to retract saidbolt to a position beyond that to which said bolt may be retracted bysaid inside handle, of means for detachably securing said outside handleto said 'ase plate in operative relation to said bolt,.said means beingmovable relative to said easeplate uponiretraction of said bolt andbeing adaptedto' be held stationary relative to said case platuponreturn of said bolt to extended position to free said outside handlefrom said case plate.

7. The combination with locking mechanism having a case plate and alocking bolt, and outside and inside handles for moving said bolt toretracted position, said outside handle having a spindle and beingadapted to retract said bolt to a position beyond that to which saidbolt is adapted to be retracted by said inside handle, of means fordetachably securing said outside handle to said case plate in' operativerelation to said bolt, said means including a plate engageable with saidspindle at all times during the actuation of said bolt by said outsidehandle, said plate being carried by and movable relative to said caseplate upon retraction of said bolt and being adapted to be heldstationary relative to said case plate upon return of said bolt toextended position to clear said spindle-and free said outsidehandle fromsaid case plate.

In testimony whereof I aflix my signature.

BURTON S. FLORADAY.

aprede-

